The Analysis of Electromagnetic Properties and Fault Handling of Magnetoresistive Rotational Speed Measuring System

doi:10.11930/j.issn.1004-9649.2015.12.70.3

Electric Power ›› 2015, Vol. 48 ›› Issue (12): 70-73.DOI: 10.11930/j.issn.1004-9649.2015.12.70.3

• Generation Technology • Previous Articles Next Articles

The Analysis of Electromagnetic Properties and Fault Handling of Magnetoresistive Rotational Speed Measuring System

WANG Zhijie, LIU Fuping, CHANG Xuenian

State Grid Hunan Electric Power Corporation Research Institute, Changsha 410007, China

Received:2015-08-19 Online:2015-12-30 Published:2015-12-18
Supported by:
This project is supported by Hunan Province Science and Technology Plan (No; 2012GK3017)

Abstract

Abstract: The magnetic resistance speed sensor is a common device for rotational speed measurement. Regarding the faulty speed measurement due to its own electromagnetic properties of the magnetoresistive speed measuring system during generation unit commissioning, the fault analysis is conducted and the fault mechanism is also studied. The analysis reveals the variation principles of the input voltage of the measuring module with respect to its own resistance, capacitance, and alternating frequency of the electromotive force. Based on that, the specific treatment measures and proposals are put forward. The implementation of these measures exhibits the effectiveness in eliminating the measurement fault.

Key words: speed sensor, electromagnetic property, clipping, fault handling

CLC Number:

TK323

WANG Zhijie, LIU Fuping, CHANG Xuenian. The Analysis of Electromagnetic Properties and Fault Handling of Magnetoresistive Rotational Speed Measuring System[J]. Electric Power, 2015, 48(12): 70-73.

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The Analysis of Electromagnetic Properties and Fault Handling of Magnetoresistive Rotational Speed Measuring System

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